Finding the Fourth Proportional to 9,437.55, 13,022.69 and 5,187.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,437.55 : 13,022.69 = 5,187.91 : x
2. Step 2: Convert to fraction form
   9,437.55/13,022.69 = 5,187.91/x
3. Step 3: Cross multiply
   9,437.55x = 13,022.69 × 5,187.91
4. Step 4: Simplify right side
   9,437.55x = 67,560,535.21
5. Step 5: Solve for x
   x = 67,560,535.21/9,437.55
6. Step 6: Final answer
   x = 7,158.69